The invention relates to a novel
quantum secret sharing method based on a
Bell state. The method comprises the following steps that: firstly, a secret
distributor sends a sequence of mixed Bell states and
decoy particles to participants; secondly, the participants
encode secret shares of the participants into corresponding Pauli operators, and the Pauli operators are applied to the received particle sequences; and finally, the participants recover the
shared secret information through cooperation. And
shared secret information can be obtained by executing Bell-based measurement by a secret
distributor. Compared with other
quantum secret sharing methods, the method has the advantages that the secret
distributor does not grasp the
secret share of the participant, even if the secret distributor grasp the
shared secret information, the
secret share of the participant cannot be deduced, and the privacy and benefits of the participant can be effectively protected. On the basis of meeting safety, a
Bell state is used as a
quantum carrier, and compared with an entangled state of n particles, the
Bell state is easier to prepare; and meanwhile, various
eavesdropping attacks can be effectively resisted. Compared with a traditional method, the method is more practical and higher in efficiency.